If Musk just shut his face and kept doing his thing, he would have been a historic figure. Not Edison or Tesla famous, but like an Alexander Bell tier name sure. Especially if his Mars plans panned out. But dude wanted to be Tony Stark and forgot that Stark was charming and likable (in the movies at least) and he… is not.
It’s right in the trailer, he’s the EP. So it’s the movie retcon-ed to be more faithful to the books, from what I can tell.